docs: def post_user_bookmarks_save(self, id, **data):
          """
          POST /users/:id/bookmarks/save/
          Adds a new bookmark for the user. Returns ``{"created": true}``.
          A user is only authorized to save his/her own events.
          """
          
          return self.post("/users/{0}/bookmarks/save/".format(id), data=data)